Use vendored go-swagger (#8087)

* Use vendored go-swagger

* vendor go-swagger

* revert un wanteed change

* remove un-needed GO111MODULE

* Update Makefile

Co-Authored-By: techknowlogick <matti@mdranta.net>

vendor/github.com/go-openapi/runtime/middleware/parameter.go

@@ -0,0 +1,480 @@
+// Copyright 2015 go-swagger maintainers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package middleware
+
+import (
+	"encoding"
+	"encoding/base64"
+	"fmt"
+	"io"
+	"net/http"
+	"reflect"
+	"strconv"
+
+	"github.com/go-openapi/errors"
+	"github.com/go-openapi/runtime"
+	"github.com/go-openapi/spec"
+	"github.com/go-openapi/strfmt"
+	"github.com/go-openapi/swag"
+	"github.com/go-openapi/validate"
+)
+
+const defaultMaxMemory = 32 << 20
+
+var textUnmarshalType = reflect.TypeOf(new(encoding.TextUnmarshaler)).Elem()
+
+func newUntypedParamBinder(param spec.Parameter, spec *spec.Swagger, formats strfmt.Registry) *untypedParamBinder {
+	binder := new(untypedParamBinder)
+	binder.Name = param.Name
+	binder.parameter = &param
+	binder.formats = formats
+	if param.In != "body" {
+		binder.validator = validate.NewParamValidator(&param, formats)
+	} else {
+		binder.validator = validate.NewSchemaValidator(param.Schema, spec, param.Name, formats)
+	}
+
+	return binder
+}
+
+type untypedParamBinder struct {
+	parameter *spec.Parameter
+	formats   strfmt.Registry
+	Name      string
+	validator validate.EntityValidator
+}
+
+func (p *untypedParamBinder) Type() reflect.Type {
+	return p.typeForSchema(p.parameter.Type, p.parameter.Format, p.parameter.Items)
+}
+
+func (p *untypedParamBinder) typeForSchema(tpe, format string, items *spec.Items) reflect.Type {
+	switch tpe {
+	case "boolean":
+		return reflect.TypeOf(true)
+
+	case "string":
+		if tt, ok := p.formats.GetType(format); ok {
+			return tt
+		}
+		return reflect.TypeOf("")
+
+	case "integer":
+		switch format {
+		case "int8":
+			return reflect.TypeOf(int8(0))
+		case "int16":
+			return reflect.TypeOf(int16(0))
+		case "int32":
+			return reflect.TypeOf(int32(0))
+		case "int64":
+			return reflect.TypeOf(int64(0))
+		default:
+			return reflect.TypeOf(int64(0))
+		}
+
+	case "number":
+		switch format {
+		case "float":
+			return reflect.TypeOf(float32(0))
+		case "double":
+			return reflect.TypeOf(float64(0))
+		}
+
+	case "array":
+		if items == nil {
+			return nil
+		}
+		itemsType := p.typeForSchema(items.Type, items.Format, items.Items)
+		if itemsType == nil {
+			return nil
+		}
+		return reflect.MakeSlice(reflect.SliceOf(itemsType), 0, 0).Type()
+
+	case "file":
+		return reflect.TypeOf(&runtime.File{}).Elem()
+
+	case "object":
+		return reflect.TypeOf(map[string]interface{}{})
+	}
+	return nil
+}
+
+func (p *untypedParamBinder) allowsMulti() bool {
+	return p.parameter.In == "query" || p.parameter.In == "formData"
+}
+
+func (p *untypedParamBinder) readValue(values runtime.Gettable, target reflect.Value) ([]string, bool, bool, error) {
+	name, in, cf, tpe := p.parameter.Name, p.parameter.In, p.parameter.CollectionFormat, p.parameter.Type
+	if tpe == "array" {
+		if cf == "multi" {
+			if !p.allowsMulti() {
+				return nil, false, false, errors.InvalidCollectionFormat(name, in, cf)
+			}
+			vv, hasKey, _ := values.GetOK(name)
+			return vv, false, hasKey, nil
+		}
+
+		v, hk, hv := values.GetOK(name)
+		if !hv {
+			return nil, false, hk, nil
+		}
+		d, c, e := p.readFormattedSliceFieldValue(v[len(v)-1], target)
+		return d, c, hk, e
+	}
+
+	vv, hk, _ := values.GetOK(name)
+	return vv, false, hk, nil
+}
+
+func (p *untypedParamBinder) Bind(request *http.Request, routeParams RouteParams, consumer runtime.Consumer, target reflect.Value) error {
+	// fmt.Println("binding", p.name, "as", p.Type())
+	switch p.parameter.In {
+	case "query":
+		data, custom, hasKey, err := p.readValue(runtime.Values(request.URL.Query()), target)
+		if err != nil {
+			return err
+		}
+		if custom {
+			return nil
+		}
+
+		return p.bindValue(data, hasKey, target)
+
+	case "header":
+		data, custom, hasKey, err := p.readValue(runtime.Values(request.Header), target)
+		if err != nil {
+			return err
+		}
+		if custom {
+			return nil
+		}
+		return p.bindValue(data, hasKey, target)
+
+	case "path":
+		data, custom, hasKey, err := p.readValue(routeParams, target)
+		if err != nil {
+			return err
+		}
+		if custom {
+			return nil
+		}
+		return p.bindValue(data, hasKey, target)
+
+	case "formData":
+		var err error
+		var mt string
+
+		mt, _, e := runtime.ContentType(request.Header)
+		if e != nil {
+			// because of the interface conversion go thinks the error is not nil
+			// so we first check for nil and then set the err var if it's not nil
+			err = e
+		}
+
+		if err != nil {
+			return errors.InvalidContentType("", []string{"multipart/form-data", "application/x-www-form-urlencoded"})
+		}
+
+		if mt != "multipart/form-data" && mt != "application/x-www-form-urlencoded" {
+			return errors.InvalidContentType(mt, []string{"multipart/form-data", "application/x-www-form-urlencoded"})
+		}
+
+		if mt == "multipart/form-data" {
+			if err = request.ParseMultipartForm(defaultMaxMemory); err != nil {
+				return errors.NewParseError(p.Name, p.parameter.In, "", err)
+			}
+		}
+
+		if err = request.ParseForm(); err != nil {
+			return errors.NewParseError(p.Name, p.parameter.In, "", err)
+		}
+
+		if p.parameter.Type == "file" {
+			file, header, ffErr := request.FormFile(p.parameter.Name)
+			if ffErr != nil {
+				return errors.NewParseError(p.Name, p.parameter.In, "", ffErr)
+			}
+			target.Set(reflect.ValueOf(runtime.File{Data: file, Header: header}))
+			return nil
+		}
+
+		if request.MultipartForm != nil {
+			data, custom, hasKey, rvErr := p.readValue(runtime.Values(request.MultipartForm.Value), target)
+			if rvErr != nil {
+				return rvErr
+			}
+			if custom {
+				return nil
+			}
+			return p.bindValue(data, hasKey, target)
+		}
+		data, custom, hasKey, err := p.readValue(runtime.Values(request.PostForm), target)
+		if err != nil {
+			return err
+		}
+		if custom {
+			return nil
+		}
+		return p.bindValue(data, hasKey, target)
+
+	case "body":
+		newValue := reflect.New(target.Type())
+		if !runtime.HasBody(request) {
+			if p.parameter.Default != nil {
+				target.Set(reflect.ValueOf(p.parameter.Default))
+			}
+
+			return nil
+		}
+		if err := consumer.Consume(request.Body, newValue.Interface()); err != nil {
+			if err == io.EOF && p.parameter.Default != nil {
+				target.Set(reflect.ValueOf(p.parameter.Default))
+				return nil
+			}
+			tpe := p.parameter.Type
+			if p.parameter.Format != "" {
+				tpe = p.parameter.Format
+			}
+			return errors.InvalidType(p.Name, p.parameter.In, tpe, nil)
+		}
+		target.Set(reflect.Indirect(newValue))
+		return nil
+	default:
+		return errors.New(500, fmt.Sprintf("invalid parameter location %q", p.parameter.In))
+	}
+}
+
+func (p *untypedParamBinder) bindValue(data []string, hasKey bool, target reflect.Value) error {
+	if p.parameter.Type == "array" {
+		return p.setSliceFieldValue(target, p.parameter.Default, data, hasKey)
+	}
+	var d string
+	if len(data) > 0 {
+		d = data[len(data)-1]
+	}
+	return p.setFieldValue(target, p.parameter.Default, d, hasKey)
+}
+
+func (p *untypedParamBinder) setFieldValue(target reflect.Value, defaultValue interface{}, data string, hasKey bool) error {
+	tpe := p.parameter.Type
+	if p.parameter.Format != "" {
+		tpe = p.parameter.Format
+	}
+
+	if (!hasKey || (!p.parameter.AllowEmptyValue && data == "")) && p.parameter.Required && p.parameter.Default == nil {
+		return errors.Required(p.Name, p.parameter.In)
+	}
+
+	ok, err := p.tryUnmarshaler(target, defaultValue, data)
+	if err != nil {
+		return errors.InvalidType(p.Name, p.parameter.In, tpe, data)
+	}
+	if ok {
+		return nil
+	}
+
+	defVal := reflect.Zero(target.Type())
+	if defaultValue != nil {
+		defVal = reflect.ValueOf(defaultValue)
+	}
+
+	if tpe == "byte" {
+		if data == "" {
+			if target.CanSet() {
+				target.SetBytes(defVal.Bytes())
+			}
+			return nil
+		}
+
+		b, err := base64.StdEncoding.DecodeString(data)
+		if err != nil {
+			b, err = base64.URLEncoding.DecodeString(data)
+			if err != nil {
+				return errors.InvalidType(p.Name, p.parameter.In, tpe, data)
+			}
+		}
+		if target.CanSet() {
+			target.SetBytes(b)
+		}
+		return nil
+	}
+
+	switch target.Kind() {
+	case reflect.Bool:
+		if data == "" {
+			if target.CanSet() {
+				target.SetBool(defVal.Bool())
+			}
+			return nil
+		}
+		b, err := swag.ConvertBool(data)
+		if err != nil {
+			return err
+		}
+		if target.CanSet() {
+			target.SetBool(b)
+		}
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		if data == "" {
+			if target.CanSet() {
+				rd := defVal.Convert(reflect.TypeOf(int64(0)))
+				target.SetInt(rd.Int())
+			}
+			return nil
+		}
+		i, err := strconv.ParseInt(data, 10, 64)
+		if err != nil {
+			return errors.InvalidType(p.Name, p.parameter.In, tpe, data)
+		}
+		if target.OverflowInt(i) {
+			return errors.InvalidType(p.Name, p.parameter.In, tpe, data)
+		}
+		if target.CanSet() {
+			target.SetInt(i)
+		}
+
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		if data == "" {
+			if target.CanSet() {
+				rd := defVal.Convert(reflect.TypeOf(uint64(0)))
+				target.SetUint(rd.Uint())
+			}
+			return nil
+		}
+		u, err := strconv.ParseUint(data, 10, 64)
+		if err != nil {
+			return errors.InvalidType(p.Name, p.parameter.In, tpe, data)
+		}
+		if target.OverflowUint(u) {
+			return errors.InvalidType(p.Name, p.parameter.In, tpe, data)
+		}
+		if target.CanSet() {
+			target.SetUint(u)
+		}
+
+	case reflect.Float32, reflect.Float64:
+		if data == "" {
+			if target.CanSet() {
+				rd := defVal.Convert(reflect.TypeOf(float64(0)))
+				target.SetFloat(rd.Float())
+			}
+			return nil
+		}
+		f, err := strconv.ParseFloat(data, 64)
+		if err != nil {
+			return errors.InvalidType(p.Name, p.parameter.In, tpe, data)
+		}
+		if target.OverflowFloat(f) {
+			return errors.InvalidType(p.Name, p.parameter.In, tpe, data)
+		}
+		if target.CanSet() {
+			target.SetFloat(f)
+		}
+
+	case reflect.String:
+		value := data
+		if value == "" {
+			value = defVal.String()
+		}
+		// validate string
+		if target.CanSet() {
+			target.SetString(value)
+		}
+
+	case reflect.Ptr:
+		if data == "" && defVal.Kind() == reflect.Ptr {
+			if target.CanSet() {
+				target.Set(defVal)
+			}
+			return nil
+		}
+		newVal := reflect.New(target.Type().Elem())
+		if err := p.setFieldValue(reflect.Indirect(newVal), defVal, data, hasKey); err != nil {
+			return err
+		}
+		if target.CanSet() {
+			target.Set(newVal)
+		}
+
+	default:
+		return errors.InvalidType(p.Name, p.parameter.In, tpe, data)
+	}
+	return nil
+}
+
+func (p *untypedParamBinder) tryUnmarshaler(target reflect.Value, defaultValue interface{}, data string) (bool, error) {
+	if !target.CanSet() {
+		return false, nil
+	}
+	// When a type implements encoding.TextUnmarshaler we'll use that instead of reflecting some more
+	if reflect.PtrTo(target.Type()).Implements(textUnmarshalType) {
+		if defaultValue != nil && len(data) == 0 {
+			target.Set(reflect.ValueOf(defaultValue))
+			return true, nil
+		}
+		value := reflect.New(target.Type())
+		if err := value.Interface().(encoding.TextUnmarshaler).UnmarshalText([]byte(data)); err != nil {
+			return true, err
+		}
+		target.Set(reflect.Indirect(value))
+		return true, nil
+	}
+	return false, nil
+}
+
+func (p *untypedParamBinder) readFormattedSliceFieldValue(data string, target reflect.Value) ([]string, bool, error) {
+	ok, err := p.tryUnmarshaler(target, p.parameter.Default, data)
+	if err != nil {
+		return nil, true, err
+	}
+	if ok {
+		return nil, true, nil
+	}
+
+	return swag.SplitByFormat(data, p.parameter.CollectionFormat), false, nil
+}
+
+func (p *untypedParamBinder) setSliceFieldValue(target reflect.Value, defaultValue interface{}, data []string, hasKey bool) error {
+	sz := len(data)
+	if (!hasKey || (!p.parameter.AllowEmptyValue && (sz == 0 || (sz == 1 && data[0] == "")))) && p.parameter.Required && defaultValue == nil {
+		return errors.Required(p.Name, p.parameter.In)
+	}
+
+	defVal := reflect.Zero(target.Type())
+	if defaultValue != nil {
+		defVal = reflect.ValueOf(defaultValue)
+	}
+
+	if !target.CanSet() {
+		return nil
+	}
+	if sz == 0 {
+		target.Set(defVal)
+		return nil
+	}
+
+	value := reflect.MakeSlice(reflect.SliceOf(target.Type().Elem()), sz, sz)
+
+	for i := 0; i < sz; i++ {
+		if err := p.setFieldValue(value.Index(i), nil, data[i], hasKey); err != nil {
+			return err
+		}
+	}
+
+	target.Set(value)
+
+	return nil
+}